mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
67 lines
1.5 KiB
Solidity
67 lines
1.5 KiB
Solidity
contract C {
|
|
function add() public pure returns (uint8, uint8) {
|
|
uint8 x; uint8 y = 0;
|
|
assembly { x := 0x0101 }
|
|
return (x + y, y + x);
|
|
}
|
|
function sub() public pure returns (uint8, uint8) {
|
|
uint8 x; uint8 y = 1;
|
|
assembly { x := 0x0101 }
|
|
return (x - y, y - x);
|
|
}
|
|
function mul() public pure returns (uint8, uint8) {
|
|
uint8 x; uint8 y = 1;
|
|
assembly { x := 0x0101 }
|
|
return (x * y, y * x);
|
|
}
|
|
function div() public pure returns (uint8, uint8) {
|
|
uint8 x; uint8 y = 1;
|
|
assembly { x := 0x0101 }
|
|
return (x / y, y / x);
|
|
}
|
|
function mod() public pure returns (uint8, uint8) {
|
|
uint8 x; uint8 y = 2;
|
|
assembly { x := 0x0101 }
|
|
return (x % y, y % x);
|
|
}
|
|
function inc_pre() public pure returns (uint8) {
|
|
uint8 x;
|
|
assembly { x := 0x0100 }
|
|
return ++x;
|
|
}
|
|
function inc_post() public pure returns (uint8) {
|
|
uint8 x;
|
|
assembly { x := 0x0100 }
|
|
return x++;
|
|
}
|
|
function dec_pre() public pure returns (uint8) {
|
|
uint8 x;
|
|
assembly { x := not(0xFF) }
|
|
return --x;
|
|
}
|
|
function dec_post() public pure returns (uint8) {
|
|
uint8 x;
|
|
assembly { x := not(0xFF) }
|
|
return x--;
|
|
}
|
|
function neg() public pure returns (int8) {
|
|
int8 x;
|
|
assembly { x := 0x80 }
|
|
return -x;
|
|
}
|
|
}
|
|
// ====
|
|
// compileViaYul: true
|
|
// compileToEwasm: also
|
|
// ----
|
|
// add() -> 1, 1
|
|
// sub() -> 0, 0
|
|
// mul() -> 1, 1
|
|
// div() -> 1, 1
|
|
// mod() -> 1, 0
|
|
// inc_pre() -> 1
|
|
// inc_post() -> 0
|
|
// dec_pre() -> FAILURE, hex"4e487b71", 0x11
|
|
// dec_post() -> FAILURE, hex"4e487b71", 0x11
|
|
// neg() -> FAILURE, hex"4e487b71", 0x11
|